First OFFICIAL TWINCHARGED M20 BUILD

[MNE30]

:D Oh I know!... I didnt take it any other way! :D LOL...Im pretty excited too!

I'm checking out the GOPRO "white" camera for 200$ cant go wrong!

I got a bunch of GoPro's, they are not the new Hero 3's but I've got a few I don't use if you want a cheap one.

[Denny]

"First OFFICIAL TWINCHARGED M20" ?

There was atleast one built yyeears ago here in Finland.
Anyway, hope you can make it work and to stay together :D. It must pack quite a punch..

Really ?!? Before I started the project I researched every corner on the web and I have never seen another one E30 M20 done. I have seen a Mitsubishi eclipse done... and of course my major inspiration the Lancia S4 Group B. Anyways doesnt matter ...I have one and dropped all the knowledge for the ones that want to follow. The car runs amazing... I just have to remove a bit of power to be able to drive it on the street!


LOL...Quite a punch is not even close in describing the brutality

I got a bunch of GoPro's, they are not the new Hero 3's but I've got a few I don't use if you want a cheap one.

Sure send me more information and price at: dmedeiros1974@gmail.com I maybe interested.

[TheTacoMan]

Hey Denny what tires are you running? I got some 17x9s comming to throw some 245s on mine.

[Denny]

Hey Denny what tires are you running? I got some 17x9s comming to throw some 245s on mine.

Right now my pathetic setup is

fronts: 16x8 +25 with 205/50R16
Rears: 16x9 +35 with 225/50R16

Still debating what to do :( right now traction is 0 for me. I want to fill those rolled fenders of mine. I dont know what offset..etc... would be perfect without rubbing!

**UPDATE**

Waiting for my BLV to arrive I tweaked my Timing map what do you think guys?

[TheTacoMan]

I just ordered some nice Federal track tire for a little over 400$, they look to be a very good tire for a good price.

Ill let you know how I like them.

http://www.onlinetires.com/search/vehicle/tires/federal/2639/all_prices/all_sizes/all_tires/all_speeds/page_1.html

Sounds like your going to need alot larger tires :p

[Denny]

I just ordered some nice Federal track tire for a little over 400$, they look to be a very good tire for a good price.

Ill let you know how I like them.

http://www.onlinetires.com/search/vehicle/tires/federal/2639/all_prices/all_sizes/all_tires/all_speeds/page_1.html

Sounds like your going to need alot larger tires :p

Love the thread on those.. they should hookup good. So what is your whole setup look like? front and rears wheels size and tires?

yeah my setup sucks..:roll:

[TheTacoMan]

Love the thread on those.. they should hookup good. So what is your whole setup look like? front and rears wheels size and tires?

yeah my setup sucks..:roll:

Im running 235/40s in the front and 255/40 in tha back.
I would the same size all around but 235-245 is the max it seems for the front.

[Denny]

I just ordered some nice Federal track tire for a little over 400$, they look to be a very good tire for a good price.

Ill let you know how I like them.

http://www.onlinetires.com/search/vehicle/tires/federal/2639/all_prices/all_sizes/all_tires/all_speeds/page_1.html

Sounds like your going to need alot larger tires :p

Im running 235/40s in the front and 255/40 in tha back.
I would the same size all around but 235-245 is the max it seems for the front.

Wheels size? any spacers?

[Denny]

[darvo]

:hitler:

[FLG]

Denny,

Get a set of ra1's or r888's and you'll have some nice grip. Especially when you get em hot.

Sent from my Galaxy Nexus using Tapatalk 2

[slappala]

Nice build!

Advance table looks quite safe/ok

The Finnish build can be found here (325i cabriolet, now 2.7L+M90+HX55):

http://www.btcf.fi/forum/showthread.php?p=3050434#post3050434

Only Finnish sorry :)

Some pics before adding the turbo can be found from www.1k.fi gallery.

I have Gates polycarbon cog belt setup (36mm) for the eaton drive.

I think I have a little different setup on boost piping. Have to go thru your thread.

I will try to post a pic of the engine room when I have more time.


quick specs of my engine:

Wiseco forged pistons
Diesel forged crank (2.7)
"eagle" rods
Dbilas cam
Shimmed double springs
Adjustable cam pulley
LS2 truck coils x6
Haltech E8
630cc injectors
Race bearings
Athena cooper ring head gasket (separate stainless fire ring)
12.9 head bolts/ARP rod bolts
double walbro 255lph pumps
...

I will answer more quostions on my own btcf thread(free forum,but needs registration) so we don't get carried away here away from the original subject that is about your build.

Edit: one pic from 2011 when making expansion tank, radiator and ABS-mounts etc. (A lot has been done since, must take some pics). Since then engine room has been painted and engine is back in. Final touches anymore to be done.(Painting valve cover, couple boost pipes etc.)

[Bullet Ride]

The Finnish build can be found here (325i cabriolet, now 2.7L+M90+HX55):

http://www.btcf.fi/forum/showthread.php?p=3050434#post3050434

Can't see without logging on to the website...

[Denny]

Nice build!

Advance table looks quite safe/ok

The Finnish build can be found here (325i cabriolet, now 2.7L+M90+HX55):

http://www.btcf.fi/forum/showthread.php?p=3050434#post3050434

Only Finnish sorry :)

Some pics before adding the turbo can be found from www.1k.fi gallery.

I have Gates polycarbon cog belt setup (36mm) for the eaton drive.

I think I have a little different setup on boost piping. Have to go thru your thread.

I will try to post a pic of the engine room when I have more time.


quick specs of my engine:

Wiseco forged pistons
Diesel forged crank (2.7)
"eagle" rods
Dbilas cam
Shimmed double springs
Adjustable cam pulley
LS2 truck coils x6
Haltech E8
630cc injectors
Race bearings
Athena cooper ring head gasket (separate stainless fire ring)
12.9 head bolts/ARP rod bolts
double walbro 255lph pumps
...

I will answer more quostions on my own btcf thread so we don't get carried away here away from the original subject that is about your build.

Thanks my friend... very very happy to see I am not alone in the M20 twincharged world, Love your built. Your engine built is a lot more serious than mine. Mine is a stock 2.5 with new gaskets and ARP studs thats why I'm limiting this beast to 17-18 PSI max until I build my spare 2.7L but I also have my winter project coming a 1990 red vert which will have a M30 (E34) M90 supercharger and who knows maybe a little turbo since I got the experience already.

My twincharged setup is Turbo feeds the Supercharger (10 from SC and 8 from Turbo ) which gives me over 23PSI which is too much. Car drives wonderfully and cant wait to tune WOT once I install my BLV (boost limiting valve from 928 motorsport) be carefull when you first drive your Twincharged Vert word of warning boost comes in very very quick and @ very low RPM if your not careful with the throttle...my first drive I came back shaking as I almost hit the curb at full force..

Basically its just the way I like it...brutal low end torque and tons of power overall. Keep me posted my friend your car is going to be rediculous how much boost are you planning?

** oh and I really dont mind you posting on my thread its all about twincharging so its all good and members here appreciated am sure

[slappala]

I see you have this kind of system:

Turbo feeds throttle body and after that it feeds the SC unit with pressurized air.

What kind of by pass valve arrangement do you have for the SC? Maybe something to do with the rapid response?

Is signal for the SC by pass coming from the intake?

On my car SC is at 0 pressure difference when not used anymore and the power it draws is minimized. It's basically a turbo engine at high rpm range and SC engine at lower rpm range.

On your system if the pressure difference between SC inlet+outlet is bigger it basically draws about 30-40hp at 10 psi from crank.

PS: Boost should be around 25 psi on my setup. Basically I run out of injectors, clutch and driveline.. I think it's still enough for a e30 cabriolet :D. 500Rwhp (700Nm) is ok and anything more is a +

18psi on stock bottom end is pretty good :), I had about 13-15psi on one of the first SC setups and after about 10k miles the cast pistons 2:nd ring lands were against oil rings. No bad cracks tho so would expect something similar miles before changing the pistons.

Next setup was with M52 pistons and it hold on ok with 17-18psi. After that the eaton was on it's limits and needed something more to the top rpm range. Then started the turbo/SC installation. M52 pistons are killer on price wise, hypereutectic. If knocking then they will blow ring lands easyer than cast pistons.

Also M50 135mm rods are a must with over 300rwhp. M20 stock rods will very likely bend.

We have other build for 1000hp+ levels. LS vortec engined e34 with 3.6L kenne bell SC unit and 8 laminova water cooler cores.

Can't wait dyno and vids of your car!